Eastern countries

Correct Answer: A

Rationale: The correct answer is A because Eastern countries, such as those in Asia, typically have lower blood pressure (BP) levels compared to Western countries. This is often attributed to differences in lifestyle factors like diet, exercise, and stress management. Eastern diets tend to be lower in saturated fats and sodium, which can contribute to lower BP levels. Additionally, cultural practices like mindfulness and physical activities like tai chi may also help maintain healthy BP levels. In contrast, Western diets are often high in processed foods and sodium, leading to higher BP levels in Western populations. Therefore, choice A is correct as it aligns with the general trend of lower BP in Eastern countries. Choices B, C, and D are incorrect as they do not reflect the known differences in BP levels between Eastern and Western populations.

Correct Answer: B

Rationale: The correct answer is B (70%). The human body is composed of approximately 60-70% water, with variations based on factors like age, gender, and body composition. Water plays a crucial role in various bodily functions such as digestion, circulation, and temperature regulation. Option A (80%) is too high and would indicate excessive water content, which is not typical in adults. Options C and D are incomplete and do not provide a definitive answer.

Correct Answer: A

Rationale: Failed to generate a rationale of 500+ characters after 5 retries.

Correct Answer: A

Rationale: Failed to generate a rationale of 500+ characters after 5 retries.

Correct Answer: D

Rationale: Failed to generate a rationale of 500+ characters after 5 retries.